Too late to reply but THL done 2 shows (otherwise not everyone would have been able to see them) at 5pm and 7pm on the Saturday. Blancmange were on the Saturday at 9.30pm

I think Saturday day tickets were available.

Anyway......I was there! THL tickets were allocated in advance and in the 'welcome packs' so I had a ticket for the 5pm show. They looked and sounded absolutely fantastic! the set was as you'd expect.....all the hits, nothing new, nothing old, no surprises! Apparently the 7pm show was exactly the same yet but was filmed for Vintage TV, so keep an eye out for that coming on at some point